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Finding the Fourth Proportional to 391,429.54, 587,141.20 and 232,606.18

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Solution

The fourth proportional to 391,429.54, 587,141.20 and 232,606.18 is: 348,907.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,429.54 : 587,141.20 = 232,606.18 : x
  2. Step 2: Convert to fraction form
    391,429.54/587,141.20 = 232,606.18/x
  3. Step 3: Cross multiply
    391,429.54x = 587,141.20 × 232,606.18
  4. Step 4: Simplify right side
    391,429.54x = 136,572,671,652.62
  5. Step 5: Solve for x
    x = 136,572,671,652.62/391,429.54
  6. Step 6: Final answer
    x = 348,907.42

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.